Extendable walking stick



FIG. 1 is a front right perspective view of an extendable walking;

FIG. 2 is an enlarged detail view of the extendable walking stick takenfrom the area within the indicated dash-dot-dash lines of FIG. 1;

FIG. 3 is a rear perspective view of the extendable walking stick;

FIG. 4 is a front view thereof;

FIG. 5 is a right side view the left side being a mirror image thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is bottom view thereof.

The evenly spaced broken lines depict portions of the article that formno part of the claimed design.

CLAIM The ornamental design for an extendable walking stick, as shownand described.